Specifications include, but are not limited to: Quality and Size: Sizes and methods for sizing height, caliper, and root ball shall be in accordance of “American Standard for Nursery Stock”. Trees should have a straight trunk and leader with well-spaced branching and wide angled branch unions. Certain plant material may be exceptions of the single leader and well-spaced branching requirement, but only when determined to be allowable by the City of Knoxville Urban Forester. Plant materials shall be free of injuries or abrasions, fresh pruning cuts not showing woundwood response, and pruning cuts shall be less than 1” in diameter. The crown of the tree shall be typical for the species, and free of irregular pruning cuts. Trees that have numerous irregular pruning cuts in the crown of the tree will be rejected. Trees that have been staked during the growing season preceding digging should not be accepted unless determined acceptable by the urban forester. All trees should be 2” to 3” caliper trees. However, the City may accept some species that are 1.75” to 3.25” caliper trees. Tree caliper shall be taken on the trunk 6 inches above the root collar.